Why terrorists attack pop concerts

In my latest National Post column I say the bombing of an Ariana Grande concert in Manchester should remind everyone, including progressives, that Islamist fanatics do not hate our open society for being repressive or for defending itself. They hate it because it is tolerant. They hate our permissiveness. They hate us for who we are not what we do. And there is nothing we can do to appease them that would not be a fundamental betrayal of ourselves and our ideals.